Extension-ladder hook.



No. 631,925. Patented Aug 29, I899; .1. BRADLEY. EXTENSION LADDER HOOK.

(Application filed .mm' 7, 1899.)

(No Model.)

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UNITED STATES PATENT QFFIC'E.

JOHN BRADLEY, OF NEW YORK, N. Y., ASSIGNOR TO CIIESEBRO, \Vl'lITMAN &

00., OF SAME PLACE.

EXTENSION-LADDER HOOK.

SPECIFICATION forming part of Letters Patent No. 631,925, dated August29, 1899. Application filed June 7,1899. Serial No. 719.679. (No model.)

and State of New York, have invented a certain new and usefulExtension-Ladder Hook, of which the following is a specification.

This invention relates to hooks for extension-ladders, and has for itsobject the construction of a hook for this purpose in a manner such thatthe parts thereof may be readily reversible in order that they may beapplied to either side of the ladder.

A further object is to construct a ladderhook that shall be cheaplyconstructed and durable and one which will be positive in its operation.

\Vith this end in view the invention consists in the formation,construction, and combination of parts, as hereinafter fully describedand set forth and claimed.

In the accompanying drawings, which form a part of this specification,Figure 1 shows a face View of the improved hook, the face-plate beingremoved and the position of the parts when reversed being shown indotted lines. Fig. 2 represents an edge view of the hook as applied to aladder. Fig. 3 shows the extension portion of a ladder equipped with theimproved hooks, their position showing the reversal of the casing.

The hook 4 is pivoted upon a sleeve, as 5, through which is passed abolt, as 6, which bolt extends through the side of the ladder andthrough the casing for the hook, as clearly indicated in Fig. 2. Thiscasing consists of a back plate-7 and a front plate 8, which are held atthe proper distance from one another by the shouldered pins 9 and 10,the springhousing 11, and the collar 5, which, in addition for thislatter purpose, acts as a distancepiece as well and prevents the casingfrom being drawn down by the bolt 6 in a manner to cause the hook 4 tobind. At the lower end of the hook a projection, as 12, extends into thespring-housing and has a lug upon its end, over which the end of thespring 13 is placed. A tongue, as 14, is constructed with an eye at itsinner end, by means of which it is pivoted upon either of the studs 9 or10.

Upon the hook, at a point below said studs,- there is a projection 15,against which the tongue rests and which holds said tongue out in thepath of the rungs of the ladder. Beads,

as shown at 16, may be formed upon the sides 5 5 of the hook to give itstability within the easing and to provide limited friction-surfacesbetween the hook and easing.

The hook 4 is provided with an upwardlyextending and recurved shoe 17for engage- 6o ment with the rungs of the ladder as the extensionportion is elevated, and this shoe is braced by the strut 18. Inaddition to the bolt 6 for securing the hook to the ladder screws arepassed through the upper edge of the back plate 7, as indicated, andanother screw through the lower end of both front plate and back plate,as clearly indicated in Fig. 2.

As will be noted from Fig. 1, the hook 4 may be reversed within thecasing by simply turning it over from the full-line position to thedotted line position and shifting the spring 13 into the dottedposition, as. indicated, when the tongue 14 may be removed from stud l0and placed upon stud 9. In making the parts. thus reversible, thenecessity for constructing right-hand and left-hand hooks and casings isavoided, which makes a saving in the manufacture of the article, sincethe same parts will serve on both right and left sides of the ladder.

In Fig. 1 the parts of the book are shown in the position occupied bythem when the ladder is being extended. When the extension portion isbeing taken down the tongue 14 will catch on the first rung below it andclose the opening of hook 4 in the manner usual in hooks of this sort,whereby the hook will be prevented from catching the rung as theextension portion is lowered.

The invention claimed is- 1. A ladder-hook consisting of a reversiblecasing, a hook as 4, pivoted therein and reversible upon its pivot, atongue as 14, anda stud at either side of the casing upon which thetongue may be pivoted, a spring-housing at one end of the casing intowhich extends the projection on the hook 4, and a spiral spring withinsaid housing engaging with said projection in a manner to hold the upperend of the hook in the path of the rungs of the ladder.

'2. The ladder-hook consisting of a casing formed by the plates 7, 8,the shoulder-posts 9 and 10, and a spring-housing, the sleeve 5, uponwhich the hook 4, is pivoted, the bolt 6, passing through the sleeve andthe casing and side of the ladder, the tongue 14, adapted to be pivotedupon either of the posts 9 or 10, the hook 4, being provided with a lugas 15,

for holding the tongue in operable position, and the spring 13, locatedin the housing and adapted to hold the hook and tongue in workingposition.

Signed at New York, in the county of New York and State of New York,this 2d day of June, A. D. 1899;

I JOHN BRADLEY. Witnesses:

WM. H. CAPEL, D. H. DECKER;

